El-Naggar, A. M.; El-Salam, A. M. Abd; Ismail, I. M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 12, p. 1088 - 1091
El-Naggar, A. M.; El-Salam, A. M. Abd; Ismail, I. M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 12, p. 1088 - 1091